mysql的密码破解

Posted 2021-05-15 rmㅤ-rf *

修改配置文件

修改配置文件，添加skip-grant-tables，跳过授权表登录，重启服务

[root@localhost mysql]# vim /etc/my.cnf 
[mysqld]
basedir = /usr/local/mysql
datadir = /opt/mysql_data
socket = /tmp/mysql.sock
port = 3306
pid-file = /opt/mysql_data/mysql.pid
user = mysql
skip-name-resolve
skip-grant-tables
[root@localhost mysql]# service mysqld restart
Shutting down MySQL.... SUCCESS! 
Starting MySQL. SUCCESS! 

进入数据库修改密码

mysql.user表中的authentication_string字段，老版本还需要修改password字段

[root@localhost mysql]# mysql
Welcome to the MySQL monitor.  Commands end with ; or \\g.
Your MySQL connection id is 2
Server version: 5.7.33 MySQL Community Server (GPL)
Copyright (c) 2000, 2021, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\\h' for help. Type '\\c' to clear the current input statement.
mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> update user set authentication_string = password('Ha153624....') where User = 'root' and Host = 'localhost';
Query OK, 1 row affected, 1 warning (0.01 sec)
Rows matched: 1  Changed: 1  Warnings: 1

修改配置文件

修改配置文件，删除skip-grant-tables，删除跳过授权表登录，重启服务

[root@localhost mysql]# vim /etc/my.cnf 
[mysqld]
basedir = /usr/local/mysql
datadir = /opt/mysql_data
socket = /tmp/mysql.sock
port = 3306
pid-file = /opt/mysql_data/mysql.pid
user = mysql
skip-name-resolve
[root@localhost mysql]# service mysqld restart
Shutting down MySQL.... SUCCESS! 
Starting MySQL. SUCCESS! 
[root@localhost mysql]# mysql -uroot -pHa153624...
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \\g.
Your MySQL connection id is 4
Server version: 5.7.33 MySQL Community Server (GPL)
Copyright (c) 2000, 2021, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\\h' for help. Type '\\c' to clear the current input statement.